Habitat boundary

The following layers were considered in setting this boundary: * Geofabric stream and catchment network * SeamapAus estuarine inventory (largely drawn from below…) * NSW estuaries * NSW estuaries with macrophytes, seagrass, mangrove, and saltmarsh (detail) * DPI fisheries macrophytes (largley drawn from the above)

These were cropped to the bounding box of the biggest polygon surrounding Wallis Lake. Where sensible, they were subset to inlcude polygons whichonly covered plausible habitat. These can be viewed below:

Given the different layers give slightly different ideas about where habitat (i.e. water, mangroves, macrophytes, saltmarsh) exists, I simply tried to create a boundary which maximized these sets of extents. This included building a layer which first defined where land was within the estuary (in red below):

The next map shows the final intersection of these layers. The geofabric definition of floodplin (?) looks pretty generous, and maybe it would be better to use the NSW estuaries layer for this?

Fisherable boundary

For this, I am simply taking the above, and reducing it to only that portion of habitat which is < X m. This uses the bathymetry data from NSW DPI (via Troy)

Catchment boundary

## Reading layer `EstuaryDrainageCatchments' from data source `\\ces-10-cdc\OSM_CDC_MMRG_work\users\war42q\natural-capital-accounting\seed-data\EstuaryDrainageCatchment\Data\EstuaryDrainageCatchments.shp' using driver `ESRI Shapefile'
## Simple feature collection with 658 features and 13 fields
## geometry type:  POLYGON
## dimension:      XY
## bbox:           xmin: 149.3751 ymin: -37.50504 xmax: 153.6387 ymax: -28.15097
## epsg (SRID):    NA
## proj4string:    +proj=longlat +ellps=GRS80 +no_defs
## Warning: sf layer has inconsistent datum (+proj=longlat +ellps=GRS80 +no_defs).
## Need '+proj=longlat +datum=WGS84'